BAP 236RTH0 pages

200W, Rugged, Railway Quality, Convection Cooled DC/DC Converter
BAP 236RTH-FT Series
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Rugged, field-proven design
For train and mobile applications
Regulated and adjustable output
Pure convection cooling by heat-sink fins
Full electronic protection
EN 50155 input ranges
N+1 redundancy available as option

This rugged, railway quality DC/DC converter uses field proven topology to generate up to 200W output power. It is a mature design
with a track record in numerous applications. Cooling is via heat-sink fins on the top of the unit; installation on a heat-sinking surface is
not required. The unit can also be installed on thermally non-conductive surfaces, such as plastic, or on curved, uneven surfaces. An
optional built-in redundancy diode allows for paralleling and N+1 operation or back-up battery connected. Additional ruggedizing and
conformal coating are available for applications that require higher immunity to shock, vibration and humidity. Full electronic
protection, low component count, large design headroom, and the use of components with established reliability result in a high MTBF.
The unit meets the requirements of EN50155 for electronic equipment used on rolling stock. It is manufactured at our plant under
strict quality control. Customized versions are available.

SPECIFICATIONS
Input Voltage
24Vdc (14.4 – 34V)
36Vdc (22 – 51V)
48Vdc (29 - 67V)
72Vdc (43 – 101V)
96Vdc (58 – 135V)
110Vdc (66 - 154V)
Other inputs on request

Switching Frequency
55kHz +/- 3kHz

Efficiency
Typically 85% at full load
depending on input/output
combination

Output Voltage
Any voltage in the 12V to
125V range
Output is floating; either
terminal can be grounded
Other outputs on request

Operating Temperature
-25 oC to + 55oC for full specification
Extended temperature ranges
with derating

Redundancy diode
Not included
Available as option

Temperature Drift
0.03% per oC over operating
temperature range

Line/Load Regulation
± 1% combined from zero
load to full load

Cooling
Convection by heat-sink fins
on top of unit

Isolation
1500Vdc input to chassis
3000Vdc input to output
1500Vdc output to chassis

Dynamic Response
Max 5% voltage deviation for 10%
to 50% load step, with better than
1msec recovery time

Environmental Protection
Ruggedizing
Conformal coating

Standards
Meets EN60950-1 and EN50155

Output Ripple/Noise
Better than 1% of output voltage
peak to peak or 0.2% RMS of the
output voltage (20MHZ BW)

Input Protection
Inrush current limiting
Varistor
Reverse polarity protection
Internal safety fuse
Lower voltage than specified
minimum input will not damage
unit

Immunity
Meets criteria as requested in
EN50155 and EN50121-3-2
according to:
EN61000-4-2 (ESD)
EN61000-4-3 (RF Immunity)
EN61000-4-4 (Fast Transient)
EN50155 (Surge)
EN61000-4-6 (Conducted immunity)
EN50155 (Voltage variation)
EMI
EN55022 Class B and
EN50121-3-2 conducted
and radiated

Overload Protection
Rectangular current limiting with
short-circuit protection (no hiccup)
Thermal shutdown in case of
insufficient cooling (self -resetting)

Shock/Vibration
IEC 61373 Cat 1 A&B
Humidity
5 – 95% non-condensing
MTBF
150,000 hours @ 45 oC
Demonstrated MTBF is
significantly higher

Output Overvoltage Protection
Double regulator loop. Second loop
completely stable and independent
of main regulator loop

Indicators
Green ‘Output ON’ LED visible
through cooling slots
Control Input
None
Alarm Output
None on standard version
Optional output fail, Form C
contacts
Package/Dimensions (W x D x H)
Modified F2 with heat-sinks on top:
114 x 114 x 261 mm
(4.5" x 4.5” x 10.3") including terminal
block and flanges.
Mounting holes are clear
Weight
1.6 kg (3.5 lb)
Connections
9-pole barrier type terminal block,
3/8” spacing
RoHS Compliance
Fully compliant
Warranty
Two years subject to application
within good engineering practice
Terminal Block Pin-Out

Enhancements to these general specifications and customizing can be accommodated upon request. Specifications are subject to change.
Designer and manufacturer of quality ac-dc power supplies and battery chargers, converters, inverters, dc-output UPS systems, complete rack mount
systems and DC-input fluorescent lamp inverters since 1982. Custom or standard. Absopulse is a BABT-approved Facility.
ABSOPULSE ELECTRONICS LTD
110 Walgreen Road, Ottawa. Ontario. K0A 1L0. CANADA
Tel: +1-613-836-3511 | Fax: +1-613-836-7488
E-mail: absopulse@absopulse.com | http://www.absopulse.com
For more information, please see:
September 7, 2012/TS/CL
http://www.absopulse.com/Absopulse_railway_mobile_extreme_environment_solutions.php

Made in Canada